2897657923691 has 16 divisors (see below), whose sum is σ = 3051501235776. Its totient is φ = 2746245507456.

The previous prime is 2897657923681. The next prime is 2897657923723. The reversal of 2897657923691 is 1963297567982.

2897657923691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2897657923691 - 2²² = 2897653729387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2897657923631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76880 + ... + 2408573.

It is an arithmetic number, because the mean of its divisors is an integer number (190718827236).

Almost surely, 2^{2897657923691} is an apocalyptic number.

2897657923691 is a deficient number, since it is larger than the sum of its proper divisors (153843312085).

2897657923691 is a wasteful number, since it uses less digits than its factorization.

2897657923691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2485942.

The product of its digits is 617258880, while the sum is 74.

The spelling of 2897657923691 in words is "two trillion, eight hundred ninety-seven billion, six hundred fifty-seven million, nine hundred twenty-three thousand, six hundred ninety-one".